Organize PDF pages

How Organize PDF Pages works

The file is read with a FileReader, rewritten in memory and offered as a download. This is why large PDFs are limited by your device's RAM rather than by an upload size limit. A 200 MB scan never crosses the network, so the slowest part is your own disk.

That is the whole architecture: static files, one script, no upload endpoint to leak or log. Close the tab and the work is gone.

Order is a list, not a property of the page

A PDF's page tree is an ordered array of references. Moving a page means changing the order of those references — the page object itself does not move, and nothing is redrawn. That is why reorganising a 400-page file here is instant.

Rotation works the same way: each page carries a /Rotate value in degrees clockwise, which the reader applies at display time. Adding 90 to an existing 90 gives 180, so a page that was already sideways does not flip back.

What the controls do

Every page is a tile showing its original page number and its position in the new document. The arrows swap it with its neighbour, the rotation button adds a quarter turn, and the cross removes it from the output without touching the source.

The counter under the grid always shows how many pages the download will contain — the number that matters before you save.

Links, bookmarks and what breaks

Links inside a kept page keep working, because the page object is copied whole. Bookmarks that pointed at a removed page have nowhere to go and are dropped by the reader; a table of contents will show stale page numbers unless you rebuild it.

Encrypted PDFs are refused rather than silently damaged — remove the password in a reader first.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions